From 994b7de568f3231ba7e01cb8b828f8b246960314 Mon Sep 17 00:00:00 2001
From: Oliver Henshaw <oliver.henshaw@gmail.com>
Date: Mon, 27 Jul 2015 10:08:00 +0200
Subject: [PATCH] Bug 1186126 - Note incompatibility with NSPR printf-like
 functions. r=nfroyd

printf-like functions
---
 mfbt/IntegerPrintfMacros.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/mfbt/IntegerPrintfMacros.h b/mfbt/IntegerPrintfMacros.h
index f1fd300ac0f..c534a0ba2c3 100644
--- a/mfbt/IntegerPrintfMacros.h
+++ b/mfbt/IntegerPrintfMacros.h
@@ -9,6 +9,12 @@
 #ifndef mozilla_IntegerPrintfMacros_h_
 #define mozilla_IntegerPrintfMacros_h_
 
+/*
+ * These macros should not be used with the NSPR printf-like functions or their
+ * users, e.g. mozilla/Logging.h.  If you need to use NSPR's facilities, see the
+ * comment on supported formats at the top of nsprpub/pr/include/prprf.h.
+ */
+
 /*
  * scanf is a footgun: if the input number exceeds the bounds of the target
  * type, behavior is undefined (in the compiler sense: that is, this code